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Stacked reaction steam turbine rotor assembly

a technology of reaction steam turbine and rotor assembly, which is applied in the direction of liquid fuel engine, vessel construction, marine propulsion, etc., can solve the problems of increasing the time and cost of casting a stator assembly, and increasing the time and cost of casting a machined rotor assembly

Inactive Publication Date: 2007-05-17
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention relates to a rotor assembly for a steam turbine. The technical effects of the invention include a retention portion with a stacked rotor section, and first and second shaft ends. The assembly also includes a stator assembly with nozzles directing steam flow and a rotor assembly with buckets receiving the steam flow. These technical effects improve the performance and efficiency of the steam turbine."

Problems solved by technology

Such a construction method increases time and cost of casting a stator assembly.
Such a construction method increases time and cost of casting the machined rotor assembly.

Method used

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  • Stacked reaction steam turbine rotor assembly
  • Stacked reaction steam turbine rotor assembly
  • Stacked reaction steam turbine rotor assembly

Examples

Experimental program
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Effect test

Embodiment Construction

[0021]FIG. 1 shows a perspective view of a conventional reaction steam turbine. The conventional reaction steam turbine includes a conventional stator 10 having stator stages 12 and a conventional rotor 20 having rotor stages 22. The conventional rotor 20 is disposed proximate to the conventional stator 10 such that each of the stator stages 12 is proximate to a corresponding one of the rotor stages 22. Each of the stator stages 12 includes a plurality of individual airfoils or nozzles 14. Each of the rotor stages 22 includes a plurality of individual airfoils or buckets 24. The nozzles 14 of the stator stages 12 are disposed proximate to the buckets 24 of the corresponding one of the rotor stages 22 to direct flow of a working fluid, for example, steam, toward the buckets 24. The buckets 24 are circumferentially disposed at an outer edge of each of the rotor stages 22. The nozzles 14 are circumferentially disposed at an inner edge of each of the stator stages 12. Both the buckets 2...

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Abstract

Disclosed herein is a rotor assembly for a steam turbine. The steam turbine includes a retention portion having a stacked rotor section. The steam turbine further includes a first shaft end disposed at a first end of the retention portion. The steam turbine yet further includes a second shaft end disposed at a second end of the retention portion that is opposite to the first end of the retention portion.

Description

BACKGROUND OF THE INVENTION [0001] The present invention relates to a rotor assembly for a reaction steam turbine and, more particularly, to stacked rotor plates of a rotor assembly of the reaction steam turbine. [0002] Reaction steam turbines typically include multiple stator stages and corresponding rotor stages. Each of the stator stages is disposed proximate to the corresponding rotor stages to direct steam flow toward the rotor stages. The stator stages include nozzle stages that direct the steam flow. The rotor stages include buckets that receive the steam flow from the nozzle stages. The steam flow exerts a force upon the buckets of the rotor stages and causes rotation of a rotor assembly, which is converted to, for example, useful work or electrical energy. [0003] Current integral-cover reaction nozzle stages include large quantities of individual reaction nozzles that are assembled into a machined stator inner casing using individual radial loading pins. Such a construction...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F01D1/02
CPCF01D5/025F01D5/026F01D5/066F05D2220/31
Inventor BRACKEN, ROBERT JAMESMURPHY, JOHN THOMASSWAN, STEPHENSIMKINS, JEFFREY ROBERTGAZZILLO, CLEMENTKORZUN, RONALD W.FITTS, DAVID ORUS
Owner GENERAL ELECTRIC CO